GitHub Activites from a New Country

let LearningPeriod = 7d;
let RunTime = 1h;
let StartTime = 1h;
let EndRunTime = StartTime - RunTime;
let EndLearningTime = StartTime + LearningPeriod;
let GitHubCountryCodeLogs = (GitHubAuditData
| where Country != "");
  GitHubCountryCodeLogs
| where TimeGenerated between (ago(EndLearningTime) .. ago(StartTime))
| summarize makeset(Country) by Actor
| join kind=innerunique (
  GitHubCountryCodeLogs
  | where TimeGenerated between (ago(StartTime) .. ago(EndRunTime))
  | distinct Country, Actor, TimeGenerated
) on Actor 
| where set_Country !contains Country
| extend timestamp = TimeGenerated
| extend AccountName = tostring(split(Actor, "@")[0]), AccountUPNSuffix = tostring(split(Actor, "@")[1])

relevantTechniques:
- T1078
name: GitHub Activites from a New Country
requiredDataConnectors: []
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: Actor
  - identifier: Name
    columnName: AccountName
  - identifier: UPNSuffix
    columnName: AccountUPNSuffix
  entityType: Account
triggerThreshold: 0
id: f041e01d-840d-43da-95c8-4188f6cef546
tactics:
- InitialAccess
version: 1.0.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GitHub/Analytic Rules/(Preview) GitHub - Activities from Infrequent Country.yaml
queryPeriod: 7d
kind: Scheduled
queryFrequency: 1d
severity: Medium
status: Available
description: |
    'Detect activities from a location that was not recently or was never visited by the user or by any user in your organization.'
query: |
  let LearningPeriod = 7d;
  let RunTime = 1h;
  let StartTime = 1h;
  let EndRunTime = StartTime - RunTime;
  let EndLearningTime = StartTime + LearningPeriod;
  let GitHubCountryCodeLogs = (GitHubAuditData
  | where Country != "");
    GitHubCountryCodeLogs
  | where TimeGenerated between (ago(EndLearningTime) .. ago(StartTime))
  | summarize makeset(Country) by Actor
  | join kind=innerunique (
    GitHubCountryCodeLogs
    | where TimeGenerated between (ago(StartTime) .. ago(EndRunTime))
    | distinct Country, Actor, TimeGenerated
  ) on Actor 
  | where set_Country !contains Country
  | extend timestamp = TimeGenerated
  | extend AccountName = tostring(split(Actor, "@")[0]), AccountUPNSuffix = tostring(split(Actor, "@")[1])  
triggerOperator: gt

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/f041e01d-840d-43da-95c8-4188f6cef546')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/f041e01d-840d-43da-95c8-4188f6cef546')]",
      "properties": {
        "alertRuleTemplateName": "f041e01d-840d-43da-95c8-4188f6cef546",
        "customDetails": null,
        "description": "'Detect activities from a location that was not recently or was never visited by the user or by any user in your organization.'\n",
        "displayName": "GitHub Activites from a New Country",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "Actor",
                "identifier": "FullName"
              },
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "AccountUPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GitHub/Analytic Rules/(Preview) GitHub - Activities from Infrequent Country.yaml",
        "query": "let LearningPeriod = 7d;\nlet RunTime = 1h;\nlet StartTime = 1h;\nlet EndRunTime = StartTime - RunTime;\nlet EndLearningTime = StartTime + LearningPeriod;\nlet GitHubCountryCodeLogs = (GitHubAuditData\n| where Country != \"\");\n  GitHubCountryCodeLogs\n| where TimeGenerated between (ago(EndLearningTime) .. ago(StartTime))\n| summarize makeset(Country) by Actor\n| join kind=innerunique (\n  GitHubCountryCodeLogs\n  | where TimeGenerated between (ago(StartTime) .. ago(EndRunTime))\n  | distinct Country, Actor, TimeGenerated\n) on Actor \n| where set_Country !contains Country\n| extend timestamp = TimeGenerated\n| extend AccountName = tostring(split(Actor, \"@\")[0]), AccountUPNSuffix = tostring(split(Actor, \"@\")[1])\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P7D",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1078"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}